Human development is based on an adjustable timeline that is different for each being. One child might take their first steps at age 2, while the other at age 3. Both are completely normal. Pregnancy, on the other hand, is stricter with time, as an early delivery can result in many developmental issues for the child. Until recently, science has not succeeded at efficiently tracking a woman’s immune function during pregnancy, even though it is the immune system that allows prediction of risks, such as preterm labor.